Ships sizes range from megaships (over 4,000 passengers) to very small vessels and luxury yachts whose passengers number in mere dozens, and knowing the differences is key to planning your best cruise vacation.

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Cruise experts have divided today’s ships into six categories and provides information on the benefits each provides: XS, S, M, L, XL and XXL.

Extra, Extra Large Ships (XXL) – 4,000+ passengers

These megaships boast unparalleled options in entertainment and amenities. They truly give the impression of being on board a floating city and provide endless choices in dining, activities and shopping (some are so large as to even incorporate a “mall” area with brand name stores). If you desire a resort-type feel from your cruise or worry about sea-sickness, this may be your best option.

These extra-large ships are a destination unto themselves and are especially good for families and multigenerational cruises due to the many amenities found onboard. There is something for everyone, and many cruisers enjoy their time onboard as much as they do the destinations they visit.

Some benefits of XL ships:

•An abundance of cabin options in many different price ranges
•A variety of dining options, ranging from ultra-casual to very upscale and formal
•A popular favorite with families due to the extensive children’s amenities and programs
•Round-the-clock facilities and activities, such as casinos, water parks, gyms and spas
•Excellent entertainment options and Broadway-quality shows like Royal Caribbean’s productions of Chicago, Hairspray and Saturday Night Fever

Large ships offer many of the same amenities as the XL ships, on a slightly smaller scale. They don’t necessarily require a ship map to navigate to entertainment and activity options, and tend to have more personal touches.

Some benefits of L ships:

•Many cabin options in different price ranges
•Numerous dining options, ranging from very casual to formal
•A popular favorite with families due to the extensive children’s amenities and programs
•Also popular with older cruisers, as the pace onboard is not as frenetic
•A variety of activities, such as casinos, gyms and spas and often there are bridge instructors on longer itineraries
•Entertainment options may include things like a fireworks display, outdoor movies and stage shows
•Onboard lecturers are often more cerebral with topics like history, politics and geography.

Medium ships generally offer a slower pace than their large counterparts, with fewer crowds, less noise and more modest offerings when it comes to activity and entertainment options. Many cruisers prefer this size of ship for its “relaxation” vibe. Many of these ships tend to be more luxurious with more personal service.

Some benefits of M ships:

•Many of the premium cruise lines have ships that fall into this category
•Several dining options
•Medium-size ships still tend to have amenities like casinos, pools and spas
•Entertainment options tend to include more enrichment activities
•Attracts a more mature crowd that is focused on relaxation and enjoyment of the voyage
•Smaller size of the ships open up options as far as itineraries and ports
•Itineraries are likely to be 10 days or longer

Small ships fill a niche for cruisers that are looking for more in-depth exploration of the regions they visit. They can visit ports that are inaccessible to larger ships, and exotic itineraries are the standard. Most river cruise ships and almost all the luxury lines have ships that fall into this category.

Some benefits of S ships:

•Most cabins are suites and have balconies
•Luxury and service are frequently a focal point of a small ship voyage
•Amenities, while limited, tend to be very high end, including dining, shore excursions, spas and enrichment activities.
•Small ships trend toward a truly all-inclusive fare
•Smaller dining and shared areas lend themselves lively conversations and closer relationships with fellow passengers.
•Itineraries tend to be 10 days or longer

Very small ships offer a private, exclusive ambiance, along with personalized service and the advantage of being able to port almost anywhere. Passengers get a feel for the water and experience destinations in a very close-up, personal way.

Some benefits of XS ships:

•The most important benefit of small ship cruising is an immersive experience in the destination. Very small ships allow an in-depth exploration of nature, culture, history and learning not possible on larger ships.
•Passengers tend to be a well-traveled, worldly crowd who enjoy the pursuit of education and exploration of the destinations they visit
•Very personal attention from the crew; with luxury cruises this translates to personal attendants that see to your every need
•More solitude and the opportunity to relax and pursue your own interests
•Seating is usually open, with no set tables